Former President Barack Obama nuked President Donald Trump's plan to militarize the U.S.-Mexican border in a rousing speech in Florida Friday afternoon.

A fired up Obama swiped at Trump during a campaign rally for Tallahassee Mayor Andrew Gillum, the Democrat vying to be Florida's next governor, and incumbent Senator Bill Nelson (D), who is defending his seat against Florida's current governor, Republican Rick Scott.

"They're telling you the existential threat to America is a bunch of poor refugees 1,000 miles away,"

the 44th president said. "They're even taking our brave troops away from their families for a political stunt at the border. The men and women of our military deserve better than that."

Watch the clip below:

Fans of Obama were elated to see him back on the stump as the country readies itself for the midterm elections, which are just four days away.

People are agreeing with Obama about Trump's approach - it's ridiculous.

Earlier this week, Trump announced his intention to send as many as 15,000 troops to the southern border to confront Central American refugees that are marching northward through Mexico.

That many American troops would eclipse the number of refugees, which is estimated at around 3,000.

"As far as the caravan is concerned our military is out, we have about 5,000-8 (thousand), we'll go up to anywhere between 10 (thousand) and 15,000 military personnel on top of border patrol, ICE and everybody else on the border," Trump told reporters Wednesday.

"Our military is being mobilized at the Southern Border," the President wrote on Twitter. "Many more troops coming. We will NOT let these Caravans, which are also made up of some very bad thugs and gang members, into the U.S. Our Border is sacred, must come in legally. TURN AROUND!"

Most of the people are women and children seeking political asylum in the United States. Trump has said that asylum claims will be denied to anyone attempting to enter the U.S. illegally.

The president on said on Thursday that members of the caravan have been “viciously and violently” throwing rocks at Mexican soldiers and that the American troops Trump plans on stationing along the border will not tolerate rock-throwing.

Trump described the band of asylum-seeking refugees marauding northward through Mexico as an “invasion” of “tough people” that “will not be allowed into the United States.”

“They wanna throw rocks at our military? Our military fights back,” Trump told reporters. “I told them to consider it a rifle. When they throw rocks like they did at the Mexican military and police, I say consider it a rifle.”

Watch the president’s remarks below: